ERIC ED430995: Differential Functioning of Items and pdf

ERIC ED430995: Differential Functioning of Items and

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Description of the Book:

Data from a 50-item translated test used for certification were used to assess the percentage and type of agreement between the Mantel-Haenszel (MH) and Differential Functioning of Items and Tests (DFIT) techniques for the detection of differential item functioning (DIF). The DFIT procedure flagged 10 of 30 items as exhibiting significant DIF while the MH technique flagged 2 of 30 items for significant DIF. In both methods items were flagged for significant DIF when translation differences appeared in the item stems. The DFIT method was more sensitive in detecting DIF, resulting exclusively from differences in the item answer options. The overall percent agreement between the two techniques for the detection of DIF in this investigation was 20 percent. The MH technique detected 1 of 10 items as exhibiting nonuniform DIF and 1 of 10 items as displaying uniform DIF. The DFIT procedure detected 4 of 10 items as exhibiting nonuniform DIF and 6 of 10 as displaying uniform DIF.

Four appendixes contain tables of descriptive statistics and the English and back-translated item versions. (Contains 34 references.) (Author/SLD

• Creator/s: ERIC
• Date: 1999-04
• Year: 1999
• Book Topics/Themes: ERIC Archive, Certification, Item Bias, Licensing Examinations (Professions), Tables (Data), Test Construction, Test Items, Translation, Price, Larry R

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